Craftsman used peerless mostly. Usually a 900 in an LT, or an 820 or 633 in the GTs. Of course there will be hydros, but as far as gear drives go they’re mostly peerless. There might be a spicer or two, but most mowers made by AYP were built to a price point. Poulon, weedeater, meijer, etc is all luck of the draw. Could have literally anything

I don’t remember what mine had in it. Mom made me ditch it before I really got into modding mowers. It was before I knew anything about the off-road community, but every time I think of it I get all PO’d because it would’ve been a great tractor to build

The 633's aren't made by Peerless.They never have been, but it's a popular misconception. Also the Craftsman GT's don't have a 633A38 transaxle in them but a slighty lighter duty AYP version. Mine is a 122419X.

Oh yeah I remember the whole 633 2300 discussion. Other than cast iron what’s the difference? The 2300 doesn’t have hi-lo right? I basically see the 633 synonymous with peerless but technically speaking you are correct.

A cast iron would be ideal. However, the three craftsman's that I've got have spicers. I guess the 1000 doesn't really count though because it did have a hydro in it before someone did a spicer swap. Does spicer also make hydros? Many tractors are very similar or have similar points to them, for example my LT130 is very similar to my LT4000.

Naw the 633s are a completely different shape and mounting setup than the 2300dms. The gears and shafts are of different design I believe and the 633s have hi/low range, which the Peerless 1200 and 2300s do not. The ones made by AYP are slightly less heavy duty than the ones made my Roper I think but they are still plenty beefy. They also have the splined axles, which is cool.